CN201446232U - Inert atmosphere control device for enclosed circulating purification - Google Patents

Inert atmosphere control device for enclosed circulating purification Download PDF

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Publication number
CN201446232U
CN201446232U CN2009200338690U CN200920033869U CN201446232U CN 201446232 U CN201446232 U CN 201446232U CN 2009200338690 U CN2009200338690 U CN 2009200338690U CN 200920033869 U CN200920033869 U CN 200920033869U CN 201446232 U CN201446232 U CN 201446232U
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China
Prior art keywords
purification
gas
sensor
argon
way valve
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Expired - Lifetime
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CN2009200338690U
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Chinese (zh)
Inventor
黄卫东
薛蕾
陈静
林鑫
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Northwestern Polytechnical University
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Northwestern Polytechnical University
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Abstract

The utility model relates to an inert atmosphere control device for enclosed circulating purification. A gas return pipeline (13) is connected with a three-way valve (2) of a gas exhaust pipe, a dust filter (3), a diaphragm booster pump (4), a pressure gas tank (5), a three-way valve (7) of a gas inlet pipe, a dehydrater (8), an argon gas purifier (9) and a water cooling jacket (10) in series in sequence; the gas inlet pipeline (11) of the water cooling jacket is connected with an atmosphere protection cover (1) through a water cooling unit (10). A gas exhaust pipeline (14) is connected with the three-way valve (2) of the gas exhaust pipe. The two ends of a gas tank inlet pipeline (15) are respectively connected with the three-way valve (7) of the gas inlet pipe and the gas inlet pipeline (11) in a sealing way. The two ends of a gas admission pipeline (16) are respectively connected with a gas bottle (6) and the pressure gas tank (5). The working gas in the processes of laser forming and repairing can be cyclically utilized, the use and emission of argon are reduced, and the operating cost is saved; during the working process, the content of oxygen and nitrogen is controlled within 10 ppm, thereby ensuring the quality of laser forming and repairing.

Description

A kind of closed circulation purifies inert atmosphere control device
One, technical field
Material processing field of the present invention specifically is that a kind of closed circulation purifies inert atmosphere control device.
Two, background technology
Laser solid forming technology, the employed raw material metal of laser forming recovery technique mostly are dusty material, the technical process that is shaped and repairs is: the laser molten pool that moves by desired trajectory receives the powder of sending to, powder at high temperature melts, after laser beam is removed, original weld pool solidifies, continuing to form new molten bath, is the process that a spot deposition, point are shaped.In laser solid forming, the repair process, prevent the molten bath pollution, avoiding alloy oxidation is the key that guarantees shaping, repairing quality.Therefore laser solid forming and prosthetic appliance all need to dispose the atmosphere protection system, are mainly the inert atmosphere protection device based on argon gas.At present the inert atmosphere protection device that uses is divided into two classes: a kind of for vacuumizing earlier, and applying argon gas then; Another is one side applying argon gas, Yi Bian discharge argon gas, is the displaced type protection.Vaccum-pumping equipment heaviness, the deficiency that cost is high, and big more then these shortcomings of equipment are obvious more; Then the inert gas waste is serious for displaced type, and gas purity is difficult to control.
Three, summary of the invention
For overcome exist in the existing inert atmosphere protection device or equipment heaviness, cost height, perhaps the inert gas waste is serious, the unmanageable deficiency of gas purity the present invention proposes a kind of closed circulation and purifies inert atmosphere control device.
The present invention includes atmosphere protection cover, diaphragm booster pump, dust filter unit, pressure gas tank, dehydrater, purification for argon device, water collar, control module and sensor, wherein:
Return-air duct begins from the atmosphere protection cover, is tightly connected with blast pipe three-way valve, dust filter unit, diaphragm booster pump, pressure gas tank, air inlet pipe three-way valve, dehydrater, purification for argon device and water collar serial successively; The water collar admission line is connected with the atmosphere protection cover by the water-cooled unit.Discharge duct is connected with the blast pipe three-way valve.The two ends of air accumulator admission line are tightly connected with air inlet pipe three-way valve and admission line respectively.The two ends of tonifying Qi pipeline are tightly connected with gas cylinder and pressure gas tank respectively.
Oxygen level sensor, nitrogen content sensor and atmosphere protective cover pressure sensor are installed on the atmosphere protection cover, the air accumulator pressure sensor is installed on the pressure gas tank, the moisture content detecting sensor is installed on the dehydrater, and the temperature sensor of purification for argon device is installed in the centre of purification for argon device; Oxygen level sensor, nitrogen content sensor and the temperature sensor of atmosphere protective cover pressure sensor, air accumulator pressure sensor, moisture content detecting sensor and purification for argon device all are connected with control module through cable.
The purification for argon device is made up of temperature sensor, insulation shell, resistive heater, the scavenging material of purification for argon device, is mainly used to remove oxygen, nitrogen and hydrogen.Its structural group becomes: resistive heater is along the inwall of insulation shell coiled coil from top to bottom, and scavenging material is filled the inside of whole insulation shell.The air inlet pipe of purification for argon device and escape pipe insert in the purification for argon device from the insulation shell of the upper end of purification for argon device, and are tightly connected with insulation shell.
Scavenging material is the particle of Ti-Zr-V alloy.
The closed circulation that the present invention proposes purifies inert atmosphere control device, and it is recycling that working gas (argon gas) in laser forming and the repair process is able to, and reduces using and discharging of argon gas, saving operating cost; While purity of argon height, oxygen, nitrogen content can be controlled in the 10ppm all the time in the course of work, guarantee the metallurgical quality of laser forming and reparation.
Four, description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is that purification for argon device of the present invention constitutes schematic diagram.Wherein:
1. atmosphere protection cover 2. blast pipe three-way valves 3. dust filter units 4. diaphragm booster pumps
5. pressure gas tank 6. gas cylinders 7. air inlet pipe three-way valves 8. dehydraters
9. purification for argon device 10. water collars 11. water collar admission lines 12. control modules
13. return-air duct 14. discharge ducts 15. air accumulator admission lines 16. tonifying Qi pipelines
17. oxygen level sensor 18. nitrogen content sensors 19. atmosphere protection cover pressure sensors
20. air accumulator pressure sensor 21. moisture content detecting sensors 22. temperature sensors 23. insulation shells
24. resistive heater 25. scavenging materials 26. air inlet pipe 27. escape pipes
Five, the specific embodiment
A kind of closed circulation purifies inert atmosphere control device, comprises atmosphere protection cover 1, diaphragm booster pump 4, dust filter unit 3, pressure gas tank 5, dehydrater 8, purification for argon device 9, water collar 10, control module 12 and sensor, wherein:
Return-air duct 13 is tightly connected with blast pipe three-way valve 2, dust filter unit 3, diaphragm booster pump 4, pressure gas tank 5, air inlet pipe three-way valve 7, dehydrater 8 and 9 serials of purification for argon device successively from 1 beginning of atmosphere protection cover; Admission line 11 is connected with atmosphere protection cover 1 by water collar 10.Discharge duct 14 is connected with blast pipe three-way valve 2.The two ends of air accumulator admission line 15 are tightly connected with air inlet pipe three-way valve 7 and water collar admission line 11 respectively.The two ends of tonifying Qi pipeline 16 are tightly connected with gas cylinder 6 and pressure gas tank 5 respectively.
Oxygen level sensor 17, nitrogen content sensor 18 and atmosphere protective cover pressure sensor 19 are installed on the atmosphere protection cover 1, be connected with control module 12 through cable, and for control module 12 provides detection information, and 12 controls of controlled unit.Air accumulator pressure sensor 20 is installed on the pressure gas tank 5, is connected with control module 12 through cable, and for control module 12 provides detection information, and 12 controls of controlled unit.Moisture content detecting sensor 21 is installed on the dehydrater 8, is connected with control module 12 through cable, and for control module 12 provides detection information, and 12 controls of controlled unit.The temperature sensor 22 of purification for argon device is installed in purification for argon device 9 centres, is connected with control module 12 through cable, and for control module 12 provides detection information, and 12 controls of controlled unit.
Control module 12 is made up of electrical equipments such as PLC controller, relay, power supply, air switches; for each part provides power supply; collect the detection information of the temperature sensor 22 of oxygen level sensor 17, nitrogen content sensor 18, atmosphere protection cover pressure sensor 19, air accumulator pressure sensor 20, moisture content detecting sensor 21, purification for argon device, the recovery of control argon gas, supercharging, storage, additional and purification.
Purification for argon device 9 is made up of insulation shell 23, resistive heater 24, scavenging material 25, is mainly used in to remove oxygen, nitrogen and hydrogen.Its structural group becomes: resistive heater 24 is along the inwall of insulation shell 23 coiled coil from top to bottom; Scavenging material 25 is filled the inside of whole insulation shell 23.The air inlet pipe 26 of purification for argon device 9 and escape pipe 27 insert in the purification for argon device 9 from the insulation shell 23 of the upper end of purification for argon device 9, and are tightly connected with insulation shell 23; Air inlet pipe 26 is inserted purification for argon device 9 bottoms.
It is scavenging material 25 that present embodiment is selected the Ti-Zr-V alloying pellet of particle diameter 0.8～2mm for use.

Claims (3)

1. a closed circulation purifies inert atmosphere control device; it is characterized in that; described closed circulation purifies inert atmosphere control device and comprises atmosphere protection cover (1), diaphragm booster pump (4), dust filter unit (3), pressure gas tank (5), dehydrater (8), purification for argon device (9), water collar (10), control module (12) and sensor, wherein:
A return-air duct 13 is tightly connected with blast pipe three-way valve (2), dust filter unit (3), diaphragm booster pump (4), pressure gas tank (5), air inlet pipe three-way valve (7), dehydrater (8), purification for argon device (9) and water collar (10) serial successively from atmosphere protection cover (1) beginning; Water collar admission line (11) is connected with atmosphere protection cover (1) by water-cooled unit (10);
B. discharge duct (14) is connected with blast pipe three-way valve (2).The two ends of air accumulator admission line (15) are tightly connected with air inlet pipe three-way valve (7) and admission line (11) respectively;
C. the two ends of tonifying Qi pipeline 16 are tightly connected with gas cylinder (6) and pressure gas tank (5) respectively;
D. oxygen level sensor (17), nitrogen content sensor (18) and atmosphere protective cover pressure sensor (19) are installed on the atmosphere protection cover (1), air accumulator pressure sensor (20) is installed on the pressure gas tank (5), moisture content detecting sensor (21) is installed on the dehydrater (8), and the temperature sensor of purification for argon device (22) is installed in the centre of purification for argon device (9); The temperature sensor (22) of oxygen level sensor (17), nitrogen content sensor (18) and atmosphere protective cover pressure sensor (19), air accumulator pressure sensor (20), moisture content detecting sensor (21) and purification for argon device all is connected with control module (12) through cable.
2. a kind of according to claim 1 closed circulation purifies inert atmosphere control device, it is characterized in that described purification for argon device (9) comprises temperature sensor (22), insulation shell (23), resistive heater (24), the scavenging material (25) of purification for argon device; Resistive heater (24) is along the inwall of insulation shell (23) coiled coil from top to bottom, and scavenging material (25) is filled the inside of whole insulation shell (23); The air inlet pipe (26) of purification for argon device (9) and escape pipe 27 insert in the purification for argon device (9) from the insulation shell (23) of the upper end of purification for argon device (9), and are tightly connected with insulation shell (23).
3. purify inert atmosphere control device as a kind of closed circulation as described in the claim 2, it is characterized in that described scavenging material is the particle of Ti-Zr-V alloy.
CN2009200338690U 2009-07-10 2009-07-10 Inert atmosphere control device for enclosed circulating purification Expired - Lifetime CN201446232U (en)

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CN103071796A (en) * 2013-01-23 2013-05-01 西安铂力特激光成形技术有限公司 Selective laser melting (SLM) atmosphere protection system
CN103071804A (en) * 2013-01-23 2013-05-01 西安铂力特激光成形技术有限公司 Atmosphere protection system for metal powder manufacturing by rotating electrode and protection method thereof
CN104313568A (en) * 2014-10-11 2015-01-28 沈阳航空航天大学 Local inert gas protection device for laser deposition repair of metal parts
CN104353832A (en) * 2014-10-24 2015-02-18 华南理工大学 Method and equipment of sealed chamber atmosphere deoxygenization and circulating purification for metal 3D printer
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